Overview

overview

10

Static

static

10

ae80957f5c...4c.exe

windows7-x64

10

ae80957f5c...4c.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ae80957f5ca07afc77f215cdea79bdbeb6bb5ada173fe5341a80f5f808c1514c

  • Size

    756KB

  • Sample

    221201-lxyf6sfh67

  • MD5

    6e737f11067ff97e784110041923effc

  • SHA1

    6035df54bc5be91c01dcb581fa84fe4b79efda26

  • SHA256

    ae80957f5ca07afc77f215cdea79bdbeb6bb5ada173fe5341a80f5f808c1514c

  • SHA512

    df7261bcdbca5c8e4f0d6eda24c57640fe8333052c38404852a58dd583ffde228bfec0ffcf45e0c983f1ec4a14740ff99b433fc75b5b85bf9d04fd648ac25311

  • SSDEEP

    12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hxb/:eZ1xuVVjfFoynPaVBUR8f+kN10EBXb

Score
10/10
darkcomethfevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

meskat.no-ip.org:1604

Mutex

DC_MUTEX-DXC4WCS

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    SBwL85BzKK9x

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      ae80957f5ca07afc77f215cdea79bdbeb6bb5ada173fe5341a80f5f808c1514c

    • Size

      756KB

    • MD5

      6e737f11067ff97e784110041923effc

    • SHA1

      6035df54bc5be91c01dcb581fa84fe4b79efda26

    • SHA256

      ae80957f5ca07afc77f215cdea79bdbeb6bb5ada173fe5341a80f5f808c1514c

    • SHA512

      df7261bcdbca5c8e4f0d6eda24c57640fe8333052c38404852a58dd583ffde228bfec0ffcf45e0c983f1ec4a14740ff99b433fc75b5b85bf9d04fd648ac25311

    • SSDEEP

      12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hxb/:eZ1xuVVjfFoynPaVBUR8f+kN10EBXb

    Score
    10/10
    darkcomethfevasionpersistencerattrojan

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Modifies security service

      evasion

    • Windows security bypass

      evasiontrojan

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager via registry modification

      evasion

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

2
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

6
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks